Machining device for model track

Abstract

The utility model provides a machining device for a model track. The machining device comprises a track tool, a first air pressure clamping assembly, a second air pressure clamping assembly and a control box. The track tool is provided with a first groove used for fixing the model track at a time, when the model track needs to be machined, an operator firstly operates the control box, the first air pressure clamping assembly and the second air pressure clamping assembly are separated, then the model track is placed in the first groove, and therefore one-time fixing of the model track is completed. And then, the control box controls the first air pressure clamping assembly and the second air pressure clamping assembly to move, and then the model track is secondarily fixed. The model track is primarily fixed on the track tool through the first groove, and the first pneumatic clamping assembly and the second pneumatic clamping assembly are matched to secondarily fix the model track, so that the model track is fixed, subsequent machining treatment is facilitated, the tedious steps of manual fixing are simplified, manual intervention is reduced, and the production efficiency is improved. And the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to processing field, specifically, relate to a processing device of model track. BACKGROUND

[0002] Currently, in the prior art, "O scale" generally refers to the size ratio of model trains or model making, in which 1 unit of actual length corresponds to 48 units of length in the model. This scale is commonly used in model making, especially for train models, to ensure that the size relationship between the model and the actual object remains consistent. For example, if a real train car is 48 feet long, the model train car length under O scale will be 1 foot. This scale is very popular among model enthusiasts because it can produce large enough models to show details, without being too large to handle or display.

[0003] Among them, the track of the "O scale" train model usually does not have a corresponding device to fix the model track during processing and manufacturing, which leads to errors in the processing of the model track and unnecessary waste. SUMMARY

[0004] The utility model aims at least to solve one of the technical problems existing in the prior art or related art.

[0005] To this end, the first aspect of the utility model provides a processing device for model track.

[0006] Therefore, the first aspect of the utility model provides a processing device for model track, which comprises: a track tool, a first groove is provided on the track tool, the first groove is matched with the model track, and the track tool is used to fix the model track at one time; a first pneumatic clamping assembly, the first pneumatic clamping assembly is connected with the track tool, and the first pneumatic clamping assembly is located on the track tool; a second pneumatic clamping assembly, the second pneumatic clamping assembly is connected with the track tool, and the second pneumatic clamping assembly is located on the track tool; a control box, the control box is electrically connected with the first pneumatic clamping assembly and the second pneumatic clamping assembly, and the control box is used to control the movement of the first pneumatic clamping assembly and the second pneumatic clamping assembly; wherein the first pneumatic clamping assembly and the second pneumatic clamping assembly cooperate to fix the model track at two times.

[0007] In addition, the processing device for model track in the above technical solution provided by the utility model can also have the following additional technical features:

[0008] In some technical solutions of the utility model, optionally, the track tool comprises: a tool tray; a track placing table, the track placing table is detachably connected with the tool tray, a first groove and a second groove are provided on the track placing table, a plurality of steps are provided in the second groove, and the second groove is used to place the first pneumatic clamping assembly.

[0009] In some technical schemes of the utility model, optionally, the first air pressure clamping assembly comprises: a first air cylinder, the first air cylinder is connected with the track placing table, the first air cylinder is electrically connected with the control box, and the first air cylinder is located in the second groove; a joint connecting piece, the joint connecting piece is connected with the output end of the first air cylinder; a first joint assembly, the number of the first joint assembly is two, and the first ends of the two first joint assemblies are respectively hinged with the joint connecting piece; a second joint assembly, the number of the second joint assembly is two, the first end of the second joint assembly is hinged with the step, and the second end of the second joint assembly is hinged with the second end of the first joint assembly; a third joint assembly, the number of the third joint assembly is multiple, the first end of the third joint assembly is hinged with the step, and the third joint assembly is located on the side of the second joint assembly away from the first air cylinder; a first clamping block, the first clamping block is hinged with the second end of the second joint assembly, the first clamping block is hinged with the second end of the third joint assembly, the first clamping block is provided with a notch, the notch is matched with the first joint assembly, and a gap is left between the first clamping block and the track placing table.

[0010] In some technical schemes of the utility model, optionally, the second air pressure clamping assembly comprises: a second air cylinder, the number of the second air cylinder is multiple, the second air cylinder is connected with the track placing table, the second air cylinder is electrically connected with the control box, the multiple second air cylinders are divided into two groups and are located on the sides of the first groove away from the first air pressure clamping assembly; a connecting block, the connecting block is connected with the output ends of the multiple second air cylinders located on the same side; a second clamping block, the second clamping block is connected with the side of the connecting block away from the second air cylinder; wherein, the connecting block and the second clamping block both leave a gap with the track placing table.

[0011] In some technical schemes of the utility model, optionally, the control box comprises: a shell, a cavity is arranged in the shell; a controller, the controller is located in the cavity; a clamping button, the clamping button is connected with the shell, the clamping button is electrically connected with the controller, the clamping button can make the first air pressure clamping assembly and the second air pressure clamping assembly clamp the model track; a release button, the release button is connected with the shell, the release button is electrically connected with the controller, and the release button can make the first air pressure clamping assembly and the second air pressure clamping assembly release the model track; an emergency stop button, the emergency stop button is connected with the shell, the emergency stop button is electrically connected with the controller, and the emergency stop button can make the first air pressure clamping assembly and the second air pressure clamping assembly in motion stop working.

[0012] In some technical schemes of the utility model, optionally, handles are arranged on the two sides of the track placing table.

[0013] Optionally, the shell is internally provided with an air pressure device, the air pressure device is electrically connected with the controller, the shell is provided with a plurality of exhaust holes on one side close to the first air pressure clamping assembly and the second air pressure clamping assembly, the plurality of exhaust holes are connected with an output end of the air pressure device, and the input end of the first air pressure clamping assembly and the input end of the second air pressure clamping assembly are both connected with the exhaust holes.

[0014] Through the technical scheme of the utility model, the model track can be fixed, and the machining efficiency of the track is improved.

[0015] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the utility model will become obvious and be easily understood from the description of embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 Fig. 1 shows a schematic diagram of a machining device of a model track according to one embodiment of the utility model;

[0018] Figure 2 Fig. 2 shows a schematic diagram of a track tool according to one embodiment of the utility model;

[0019] Figure 3 Fig. 3 shows a schematic diagram of a first air pressure clamping assembly according to one embodiment of the utility model;

[0020] Figure 4 Fig. 4 shows a schematic diagram of a first air pressure clamping assembly according to one embodiment of the utility model;

[0021] Figure 5 Fig. 5 shows a schematic diagram of a second air pressure clamping assembly according to one embodiment of the utility model;

[0022] Figure 6 Fig. 6 shows a schematic diagram of a control box according to one embodiment of the utility model;

[0023] Wherein, Figures 1 to 6 The correspondence between the reference signs and the component names in the drawings is as follows:

[0024] 10, track tool; 20, first pneumatic clamping assembly; 30, second pneumatic clamping assembly; 40, control box; 50, handle; 60, exhaust hole; 102, tool tray; 104, track placement table; 202, first air cylinder; 204, joint connecting piece; 206, first joint assembly; 208, second joint assembly; 210, first clamping block; 212, third joint assembly; 302, second air cylinder; 304, connecting block; 306, second clamping block; 402, shell; 404, clamping button; 406, release button; 408, emergency stop button. DETAILED DESCRIPTION

[0025] In order to enable the above-mentioned purposes, features and advantages of the present application to be more clearly understood, the present application will be described in further detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0026] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be practiced in other ways different from those described herein, and therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0027] The following refers to Figures 1 to 6 a processing device for a model track according to some embodiments of the present application.

[0028] In an embodiment of the present application, as Figure 1 shown, a processing device for a model track is proposed, comprising: a track tool 10, the track tool 10 is provided with a first groove, the first groove is matched with the model track, and the track tool 10 is used to fix the model track at one time; a first pneumatic clamping assembly 20, the first pneumatic clamping assembly 20 is connected with the track tool 10, and the first pneumatic clamping assembly 20 is located on the track tool 10; a second pneumatic clamping assembly 30, the second pneumatic clamping assembly 30 is connected with the track tool 10, and the second pneumatic clamping assembly 30 is located on the track tool 10; a control box 40, the control box 40 is electrically connected with the first pneumatic clamping assembly 20, the control box 40 is electrically connected with the second pneumatic clamping assembly 30, and the control box 40 is used to control the movement of the first pneumatic clamping assembly 20 and the second pneumatic clamping assembly 30; wherein, the first pneumatic clamping assembly 20 and the second pneumatic clamping assembly 30 cooperate to fix the model track at two times.

[0029] The utility model provides a kind of processing device of model track, including track tooling 10, first pneumatic clamping component 20, second pneumatic clamping component 30 and control box 40.Therein, first recess for fixing model track once is equipped on track tooling 10, when needing to process model track, operator first operates control box 40, let first pneumatic clamping component 20 and second pneumatic clamping component 30 separate, then model track is placed in first recess, to complete the fixation of model track once.And then, control box 40 controls first pneumatic clamping component 20 and second pneumatic clamping component 30 movement, and then secondarily fix model track.

[0030] Through first recess, model track is preliminarily fixed on track tooling 10, and first pneumatic clamping component 20 and second pneumatic clamping component 30 cooperate to fix model track twice, so as to realize the fixation of model track, facilitate subsequent processing, simplify the cumbersome procedure of manual fixation, reduce manual intervention, improve work efficiency and enhance the safety of operation.

[0031] Further, in some embodiments of the utility model, as shown in Figure 2 Track tooling 10 includes tooling tray 102; Track placing table 104, track placing table 104 is detachably connected with tooling tray 102, first recess and second recess are provided on track placing table 104, a plurality of steps are provided in second recess, and second recess is used to place first pneumatic clamping component 20.

[0032] In the embodiment, track tooling 10 includes tooling tray 102 and track placing table 104. Wherein, track placing table 104 is detachably connected with tooling tray 102, first recess is provided on track placing table 104, and then different track placing table 104 and first pneumatic clamping component 20 and second pneumatic clamping component 30 located on track placing table 104 can be selected according to different model tracks.

[0033] And, second recess is further provided on track placing table 104, a plurality of steps are provided in second recess, and second recess is used to place first pneumatic clamping component 20, so as to reduce the occupied space of component on plane, so that the whole track placing table 104 is more compact.

[0034] Further, in some embodiments of the utility model, as shown in Figure 3 And Figure 4As shown, the first pneumatic clamping assembly 20 comprises: a first air cylinder 202, the first air cylinder 202 is connected with the track placing table 104, the first air cylinder 202 is electrically connected with the control box 40, and the first air cylinder 202 is located in the second groove; a joint connecting piece 204, the joint connecting piece 204 is connected with the output end of the first air cylinder 202; a first joint assembly 206, the number of the first joint assembly 206 is two, and the first ends of the two first joint assemblies 206 are respectively hinged to the joint connecting piece 204; a second joint assembly 208, the number of the second joint assembly 208 is two, the first end of the second joint assembly 208 is hinged to the step, and the second joint assembly 208 is hinged to the second end of the first joint assembly 206; a third joint assembly 212, the number of the third joint assembly 212 is multiple, the first end of the third joint assembly 212 is hinged to the step, and the third joint assembly 212 is located on the side of the second joint assembly 208 away from the first air cylinder 202; and a first clamping block 210, the first clamping block 210 is hinged to the second end of the second joint assembly 208, the first clamping block 210 is hinged to the second end of the third joint assembly 212, the first clamping block 210 is provided with a notch, the notch is matched with the first joint assembly 206, and a gap is left between the first clamping block 210 and the track placing table 104.

[0035] In this embodiment, the first pneumatic clamping assembly 20 comprises the first air cylinder 202, the joint connecting piece 204, the first joint assembly 206, the second joint assembly 208, the third joint assembly 212 and the first clamping block 210. When the first pneumatic clamping assembly 20 needs to work, the controller controls the first air cylinder 202, the output end of the first air cylinder 202 drives the joint connecting piece 204 to move, and then drives the two first joint assemblies 206 to move, the two first joint assemblies 206 drive the two second joint assemblies 208 on the sides to move, the second joint assemblies 208 push the third joint assembly 212 at the same time as the first clamping block 210, so that the third joint assembly 212 assists in pushing the first clamping block 210 to move towards the model track, thereby improving the production efficiency, reducing the labor cost, and making the simulation track more stable during machining. When the output end of the first air cylinder 202 retracts, part of the first joint assembly 206 is matched with the notch, thereby improving the utilization rate of space. Moreover, a gap is left between the first clamping block 210 and the track placing table 104, so that the friction between the devices can be reduced.

[0036] Specifically, the step is located on both sides of the first air cylinder 202.

[0037] Further, in some embodiments of the utility model, as shown in Figure 5As shown, the second pneumatic clamping assembly 30 comprises: a plurality of second air cylinders 302, the second air cylinders 302 are connected with the track placing table 104, the second air cylinders 302 are electrically connected with the control box 40, the plurality of second air cylinders 302 are divided into two groups and are located on the sides of the first recess away from the first pneumatic clamping assembly 20; a connecting block 304, the connecting block 304 is connected with the output ends of the plurality of second air cylinders 302 located on the same side; and a second clamping block 306, the second clamping block 306 is connected with one side of the connecting block 304 away from the second air cylinders 302, wherein the plurality of second air cylinders 302 are divided into two groups and are located on the sides of the first recess away from the first pneumatic clamping assembly 20, and the connecting block 304 and the second clamping block 306 are both provided with gaps relative to the track placing table 104.

[0038] In this embodiment, the second pneumatic clamping assembly 30 comprises the second air cylinders 302, the connecting block 304 and the second clamping block 306, wherein when the second pneumatic clamping assembly 30 needs to work, the controller controls the plurality of second air cylinders 302, the output ends of the plurality of second air cylinders 302 jointly drive the connecting block 304 to move, and the connecting block 304 further drives the second clamping block 306 to move towards the model track, thereby improving the production efficiency, reducing the labor cost and making the model track more stable during processing.

[0039] Specifically, the first clamping block 210 and the second clamping block 306 can be selected according to the shape of the model rail.

[0040] Further, in some embodiments of the utility model, as shown in Figure 6 As shown, the control box 40 comprises: a shell 402, the shell 402 is provided with a cavity; a controller, the controller is located in the cavity; a clamping button 404, the clamping button 404 is connected with the shell 402, the clamping button 404 is electrically connected with the controller, and the clamping button 404 can clamp the model track by the first pneumatic clamping assembly 20 and the second pneumatic clamping assembly 30; a release button 406, the release button 406 is connected with the shell 402, the release button 406 is electrically connected with the controller, and the release button 406 can release the model track by the first pneumatic clamping assembly 20 and the second pneumatic clamping assembly 30; and an emergency stop button 408, the emergency stop button 408 is connected with the shell 402, the emergency stop button 408 is electrically connected with the controller, and the emergency stop button 408 can stop the working of the first pneumatic clamping assembly 20 and the second pneumatic clamping assembly 30 in motion.

[0041] In this embodiment, the control box 40 comprises a housing 402, a controller, a clamping button 404, a releasing button 406 and an emergency stop button 408. The first pneumatic clamping assembly 20 and the second pneumatic clamping assembly 30 can be simultaneously controlled to clamp the model track through the clamping button 404, and the first pneumatic clamping assembly 20 and the second pneumatic clamping assembly 30 can be simultaneously controlled to release the model track through the releasing button 406, so that the model track can be pretreated before machining through the clamping and releasing buttons 406, and the working efficiency and flexibility are improved.

[0042] On this basis, the emergency stop button 408 is further arranged to stop the device in emergency, so that the reliability of the device is enhanced.

[0043] Further, in some embodiments of the utility model, the track placing table 104 is provided with a handle 50 on both sides.

[0044] In this embodiment, the track placing table 104 is provided with a handle 50 on both sides, so that the track placing table 104 can be replaced conveniently.

[0045] Specifically, the track placing table 104 is detachably connected with the tool tray 102 through a positioning pin.

[0046] Further, in some embodiments of the utility model, the housing 402 is provided with a pneumatic device, the pneumatic device is electrically connected with the controller, the housing 402 is provided with a plurality of exhaust holes 60 on the side close to the first pneumatic clamping assembly 20 and the second pneumatic clamping assembly 30, the plurality of exhaust holes 60 are connected with the output end of the pneumatic device, and the input end of the first pneumatic clamping assembly 20 and the input end of the second pneumatic clamping assembly 30 are connected with the exhaust holes 60.

[0047] In this embodiment, the pneumatic device increases the air pressure of the first pneumatic clamping assembly 20 and the second pneumatic clamping assembly 30 through the exhaust holes 60, so that the controller can control the first pneumatic clamping assembly 20 and the second pneumatic clamping assembly 30.

[0048] In one specific embodiment, the working process of the utility model is as follows:

[0049] First, in the initial state, the first cylinder 202 and the second cylinder 302 are in the retracted state, the part of the first joint assembly 206 is fitted in the notch of the first clamping block 210, the operator selects the track placement table 104 matched with the model track, wherein whether the track placement table 104 is matched with the model track is judged according to the matching degree of the first groove and the pre-processed model track. Then, the track placement table 104 is connected with the tool tray 102, and the model track is placed in the corresponding groove, thereby completing the primary fixation of the model track. At this time, the operator presses the clamping button 404, the air pressure device drives the first cylinder 202 and the plurality of second cylinders 302 simultaneously through the exhaust hole 60, the output end of the first cylinder 202 drives the joint connecting piece 204 to move, and then drives the two first joint assemblies 206 to move, the two first joint assemblies 206 drive the two second joint assemblies 208 on the two sides to move, the second joint assembly 208 pushes the third joint assembly 212 at the same time as the first clamping block 210, so that the third joint assembly 212 assists in pushing the first clamping block 210 to move towards the model track, the output end of the two second cylinders 302 commonly drives the connecting block 304 to move, and the connecting block 304 drives the second clamping block 306 to move towards the model track, and then the first clamping block 210 and the second clamping block 306 commonly clamp the model track, thereby completing the secondary fixation of the model track, to complete the preparation work before the simulation track processing.

[0050] In the claims, the specification, and the drawings of the utility model, the term "a plurality of" refers to two or more than two, unless there is an additional explicit limitation, the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship shown in the drawings, only for more conveniently describing the utility model and making the description process more simple, and is not for indicating or implying that the device or element described must have the specific orientation described, be constructed and operated in a specific orientation, therefore these descriptions cannot be understood as the limitation of the utility model; the terms "connection", "installation", "fixation" and the like should be understood in a broad sense, for example, "connection" can be the fixed connection between a plurality of objects, can also be the detachable connection between a plurality of objects, or integrally connected; can be the direct connection between a plurality of objects, can also be the indirect connection between a plurality of objects through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances of the above-mentioned data.

[0051] In the claims, the specification, and the drawings of the present application, terms such as "one embodiment", "an embodiment", "certain embodiments" and the like mean that the particular feature, structure, material, or characteristic being referred to is included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment. Further, the description as used herein is intended to be illustrative of at least one embodiment of the present application and is not intended to be limiting. Still further, any one or more of the features, structures, materials, or characteristics could be combined in any suitable manner in one or more embodiments or examples.

[0052] The above descriptions are merely some embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for processing a model track, characterized in that The utility model relates to a track tool (10) is provided with first recess groove, and the first recess groove is adapted to model track, and the track tool (10) is used to fix model track once, and first pneumatic clamping assembly (20) is connected with track tool (10), and first pneumatic clamping assembly (20) is located on track tool (10), and second pneumatic clamping assembly (30) is connected with track tool (10), and second pneumatic clamping assembly (30) is located on track tool (10), and control box (40) is electrically connected with first pneumatic clamping assembly (20), and control box (40) is electrically connected with second pneumatic clamping assembly (30), and control box (40) is used to control first pneumatic clamping assembly (20) and second pneumatic clamping assembly (30) movement, and wherein, first pneumatic clamping assembly (20) and second pneumatic clamping assembly (30) cooperate and are used to fix model track twice. The utility model relates to a track tool (10) is provided with first recess groove, and the first recess groove is adapted to model track, and the track tool (10) is used to fix model track once, and first pneumatic clamping assembly (20) is connected with track tool (10), and first pneumatic clamping assembly (20) is located on track tool (10), and second pneumatic clamping assembly (30) is connected with track tool (10), and second pneumatic clamping assembly (30) is located on track tool (10), and control box (40) is electrically connected with first pneumatic clamping assembly (20), and control box (40) is electrically connected with second pneumatic clamping assembly (30), and control box (40) is used to control first pneumatic clamping assembly (20) and second pneumatic clamping assembly (30) movement, and wherein, first pneumatic clamping assembly (20) and second pneumatic clamping assembly (30) cooperate and are used to fix model track twice. The utility model relates to a track tool (10) includes: Tool tray (102); Track placement table (104), track placement table (104) is detachably connected with tool tray (102), and track placement table (104) is provided with first recess groove and second recess groove, a plurality of steps are arranged in second recess groove, and second recess groove is used to place first pneumatic clamping assembly (20). The utility model relates to a track tool (10) includes:

2. The apparatus for processing a model track according to claim 1, wherein First air cylinder (202), first air cylinder (202) is connected with track placement table (104), first air cylinder (202) is electrically connected with control box (40), and first air cylinder (202) is located in second recess groove; Joint connecting piece (204), joint connecting piece (204) is connected with the output end of first air cylinder (202); First joint assembly (206), the number of first joint assembly (206) is two, and the first end of two first joint assemblies (206) is hinged with joint connecting piece (204) respectively; 3. The apparatus for processing a model track according to claim 2, wherein Second joint assembly (208), the number of second joint assembly (208) is two, and the first end of second joint assembly (208) is hinged with the step, and second joint assembly (208) is hinged with the second end of first joint assembly (206); Third joint assembly (212), the number of third joint assembly (212) is a plurality, and the first end of third joint assembly (212) is hinged with the step, and third joint assembly (212) is located on the side, away from first air cylinder (202), of second joint assembly (208); ​ ​ ​ ​ A first clamping block (210) is hinged to a second end of the second joint assembly (208), hinged to a second end of the third joint assembly (212), provided with a notch matched with the first joint assembly (206), and left a gap with the track placement table (104).

4. The apparatus for processing a model track according to claim 2, wherein The second pneumatic clamping assembly (30) comprises: A plurality of second air cylinders (302) are connected to the track placement table (104) and electrically connected to the control box (40), and the plurality of second air cylinders (302) are divided into two groups and located on the same side away from the first pneumatic clamping assembly (20); A connecting block (304) is connected to the output ends of the plurality of second air cylinders (302) on the same side; A second clamping block (306) is connected to the side of the connecting block (304) away from the second air cylinder (302); The connecting block (304) and the second clamping block (306) are both left a gap with the track placement table (104).

5. The apparatus for processing a model track according to claim 1, wherein The control box (40) comprises: A shell (402) is provided with a cavity inside; A controller is located in the cavity; A clamping button (404) is connected to the shell (402) and electrically connected to the controller, and the clamping button (404) can clamp the model track by the first pneumatic clamping assembly (20) and the second pneumatic clamping assembly (30); A release button (406) is connected to the shell (402) and electrically connected to the controller, and the release button (406) can release the model track by the first pneumatic clamping assembly (20) and the second pneumatic clamping assembly (30); An emergency stop button (408) is connected to the shell (402) and electrically connected to the controller, and the emergency stop button (408) can stop the first pneumatic clamping assembly (20) and the second pneumatic clamping assembly (30) in motion.

6. The model track processing device according to claim 2, wherein Handles (50) are provided on both sides of the track placement table (104).

7. The model track processing device according to claim 5, wherein The shell (402) is provided with a gas pressure device, the gas pressure device is electrically connected with the controller, the shell (402) is provided with a plurality of exhaust holes (60) near one side of the first gas pressure clamping assembly (20) and the second gas pressure clamping assembly (30), the plurality of exhaust holes (60) are connected with the output end of the gas pressure device, and the input end of the first gas pressure clamping assembly (20) and the input end of the second gas pressure clamping assembly (30) are connected with the exhaust hole (60).

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